Ytterbium and silver co-catalyzed synthesis of pyrrole-fused bicyclic skeletons from enynones and isocyanides

2018 ◽  
Vol 54 (49) ◽  
pp. 6412-6415 ◽  
Author(s):  
Feng Li ◽  
Peng Hu ◽  
Mingming Sun ◽  
Chunju Li ◽  
Xueshun Jia ◽  
...  
Keyword(s):  
Cascade Reaction ◽  
Cooperative Catalysis ◽  
Fused Heterocycles

A cascade reaction of isocyanide and enynone using Yb/Ag cooperative catalysis provided a quick access to structurally complex pyrrole-fused heterocycles.

Catalytic Cascade Reaction To Access Cyclopentane-Fused Heterocycles: Expansion of Pd–TMM Cycloaddition

2019 ◽  
Vol 21 (11) ◽  
pp. 3998-4002 ◽  
Author(s):  
Donguk Ko ◽  
Seung-yeol Baek ◽  
Jae Yul Shim ◽  
Ju Young Lee ◽  
Mu-Hyun Baik ◽  
...  
Keyword(s):  
Cascade Reaction ◽  
Fused Heterocycles

Ru-Catalyzed cascade reaction of α,ω-alkynoic acids and arylethylamines towards the synthesis of aryl-fused heterocycles

2020 ◽  
Vol 7 (4) ◽  
pp. 660-665
Author(s):  
Yinying Zheng ◽  
Jiami Liu ◽  
Xinsheng Lei
Keyword(s):  
Cascade Reaction ◽  
Fused Heterocycles

A simple, efficient, and mild method for the preparation of aryl-fused heterocycles has been developed using α,ω-alkynoic acids and arylethylamines.

Diastereo- and enantioselective Mannich/cyclization cascade reaction of isocyanoacetates with cyclic sulfamide ketimines by cinchona alkaloid squaramide/AgOAc cooperative catalysis

2018 ◽  
Vol 16 (25) ◽  
pp. 4641-4649 ◽  
Author(s):  
Mei-Xin Zhao ◽  
Zhi-Wen Dong ◽  
Guang-Yu Zhu ◽  
Xiao-Li Zhao ◽  
Min Shi
Keyword(s):  
Cascade Reaction ◽  
Optically Active ◽  
Cinchona Alkaloid ◽  
Cooperative Catalysis ◽  
Mannich Cyclization

This reaction provides facile access to a variety of optically active imidazoline-fused sulfahydantoin derivatives in excellent yields and good to excellent stereoselectivities.

Aminocoumarins: A Privileged Precursor for the Synthesis of Fused Heterocycles

2019 ◽  
Vol 23 (9) ◽  
pp. 1045-1075 ◽  
Author(s):  
Saigal ◽  
Sumbulunnisan Shareef ◽  
Habibur Rahman ◽  
Md. Musawwer Khan
Keyword(s):  
Chemical Reactivity ◽  
Structural Systems ◽  
Natural Occurrence ◽  
Amino Group ◽  
Active Compounds ◽  
The Past ◽  
Fused Heterocycles

Aminocoumarins are one of the important core structural systems, present in several biologically and medicinally active compounds. Owing to its natural occurrence, potential pharmacological applications and remarkable versatility as a privileged precursor, several proficient synthetic protocols have been reported in the literature over the past years. The presence of an amino group and enamine carbon enhances its chemical reactivity and thus such functionality is repeatedly used for the construction of various fused and simple heterocycles. This review highlights the preparation of different aminocoumarins and their applications for the construction of a variety of five, six and eight membered fused heterocycles.

Cu-Catalyzed Cascade Reaction of Isoxazoles with Diaryliodonium Salts for the Synthesis of Acridines

2020 ◽  
Vol 17 (12) ◽  
pp. 944-950
Author(s):  
Shangrong Zhu ◽  
Xuechen Lu ◽  
Qiuneng Xu ◽  
Jian Li ◽  
Shenghu Yan
Keyword(s):  
Cascade Reaction ◽  
Efficient Synthesis ◽  
Acridine Derivatives ◽  
Diaryliodonium Salts

A straightforward and efficient synthesis of acridine derivatives via a copper-catalyzed cascade reaction among isoxazoles and diaryliodonium salts is achieved. Various mono-, multi-substituted and 9-substituted acridine derivatives could be obtained in moderate to good yields. The process has gone through tandem double arylation and Friedel-Crafts reactions.

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